Solar Impulse pilots prepare for an extraordinary feat

Solar plane pilot: "It's just a blessing"

Hear more from adventurers Bertrand Piccard and Andre Borschberg, who have built a solar-powered plane which they plan to fly across the United States next spring and then around the world without burning an ounce of fuel.

In this clip, Bertrand Piccard, co-founder and president of Solar Impulse, tells Bob Simon it will be an adventure and a privilege to spend five days and nights flying his solar plane.

Solar Impulse pilots prepare for an extraordinary feat

Learning to fly a solar plane

Solar Impulse co-founder Andre Borschberg tells Bob Simon that it's not easy to fly his plane. Even a NASA test pilot couldn't land it without practice.

Solar Impulse pilots prepare for an extraordinary feat

Attempting the "impossible" in solar flight

Bertrand Piccard and Andre Borschberg, co-founders of Solar Impulse, tell Bob Simon that people thought they were crazy when they announced their plan to fly around the world without fuel.